NXP Semiconductors MC9S12NE64VTUE

Overview

MC9S12NE64VTUE from Freescale Semiconductor is a 16-bit HCS12 microcontroller with integrated 64 KB Flash, 8 KB RAM, Ethernet MAC + PHY (10/100 Mbps), 10-bit 8-channel ADC, dual SCI, SPI, I²C, and 16-bit timer module. It operates at up to 25 MHz core frequency and supports IEEE 802.3-compliant Ethernet communication in industrial control and building automation systems.

For engineers reviewing the MC9S12NE64VTUE datasheet, MC9S12NE64VTUE pinout, MC9S12NE64VTUE application, or MC9S12NE64VTUE equivalent, key selection criteria include on-chip Ethernet transceiver compliance (EPHYV2), integrated penta-output voltage regulator (VREGPHYV1), background debug interface (BDMV4), and Flash security features including backdoor key access.

Technical Context

The MC9S12NE64VTUE integrates a full Ethernet subsystem comprising EMACV1 (Media Access Controller) and EPHYV2 (Physical Layer Transceiver), enabling direct 10/100BASE-TX connectivity without external PHY. Its clock system combines CRGV4 (Clocks and Reset Generator) with OSCV2 for flexible PLL-based clock synthesis and robust clock monitoring.

It features S12FTS64KV3 Flash with 64 KB program memory, ATD10B8CV3 10-bit ADC with 8 analog inputs and multiple trigger sources, and TIM16B4CV1 timer supporting input capture, output compare, pulse accumulation, and gated time accumulation modes - all synchronized to the same bus clock domain.

Key Specifications

Pinout & Package

MC9S12NE64VTUE is housed in a 112-pin LQFP package (16 × 16 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are defined per signal description in Chapter 1.2 of the datasheet, including dedicated Ethernet pins (TX+, TX−, RX+, RX−), analog inputs (AN0–AN7), serial interfaces (SCI0/SCI1, SPI, I²C), and BDM debug signals (BKGD, RESET).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller-with-integrated-Ethernet applications.

Compared with MC9S12NE64CPVE, the MC9S12NE64VTUE offers superior thermal dissipation via its LQFP thermal pad; compared with Kinetis K60DN512ZVMD10, it delivers complete Ethernet connectivity in one chip but with older architecture and limited ecosystem longevity.

Availability

MC9S12NE64VTUE is available at Aetrix Electronics and suitable for industrial Ethernet nodes, building automation controllers, networked energy meters, and smart lighting gateways requiring stable component supply across extended product lifecycles.

Supply support for MC9S12NE64VTUE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Freescale Semiconductor (now part of NXP Semiconductors since 2015) designed high-reliability microcontrollers for automotive, industrial, and networking applications before its acquisition.

The MC9S12NE64VTUE belongs to the HCS12NE family, engineered specifically for cost-sensitive, Ethernet-connected embedded systems where integration of MAC+PHY and multi-rail regulation reduces system-level complexity.

FAQ

What is the maximum operating frequency of the MC9S12NE64VTUE core?

The MC9S12NE64VTUE features an HCS12 16-bit CPU with a maximum core frequency of 25 MHz. This is achieved using the internal PLL (CRGV4) locked to an external crystal or oscillator source, with configurable divide ratios ensuring stable timing across temperature and voltage ranges. The MC9S12NE64VTUE does not support overclocking beyond this rated frequency.

Does the MC9S12NE64VTUE include a CAN controller?

No, the MC9S12NE64VTUE does not include a CAN controller. Its communication peripherals consist of dual SCI (UART), SPI, I²C, and Ethernet MAC+PHY (EMACV1 + EPHYV2). CAN functionality is absent from the MC9S12NE64VTUE datasheet and block diagram - unlike other HCS12 derivatives such as the MC9S12C32 or MC9S12DG128.

How is Flash security implemented on the MC9S12NE64VTUE?

The MC9S12NE64VTUE implements Flash security through two mechanisms: standard security lock bits and a 8-byte backdoor key accessible only via the BKGD pin during BDM programming. Once secured, normal read/write/erase operations are blocked unless the correct key is entered in special single-chip mode - a feature documented in Section 2.6 of the MC9S12NE64VTUE datasheet.

What voltage rails does the integrated VREGPHYV1 generate for the MC9S12NE64VTUE?

The penta-output voltage regulator (VREGPHYV1) inside the MC9S12NE64VTUE generates five independent supply rails: 3.3 V (I/O), 2.5 V (USB PHY interface), 1.8 V (core logic), 1.5 V (PLL), and 1.2 V (Ethernet PHY analog section). These are derived from a single 5 V input and eliminate the need for external DC-DC converters or LDOs in most Ethernet node designs.

Can the MC9S12NE64VTUE operate without an external crystal?

Yes, the MC9S12NE64VTUE can operate using its internal oscillator circuit with an external ceramic resonator or crystal on EXTAL/XTAL pins, but it cannot run from a fully internal RC oscillator. The OSCV2 module requires an external timing element; no internal RC option is provided. Crystal frequencies from 4–20 MHz are supported, with 8 MHz commonly used for Ethernet timing compliance.